#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define rep(i, a, b) for (int i = (a); i <= (b); i++)
#define per(i, a, b) for (int i = (a); i >= (b); i--)
#define endl '\n'
const int N = 2e5 + 5;

int n, m, q;
set<int> st[N];
int f[N];

int main() {
  ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
  cin >> n >> m >> q;
  while (q--) {
    int op, x, y;
    cin >> op;
    if (op == 1) {
      cin >> x >> y;
      st[x].insert(y);
    }
    if (op == 2) {
      cin >> x;
      f[x] = 1;
    }
    if (op == 3) {
      cin >> x >> y;
      cout << (f[x] || st[x].count(y) ? "Yes" : "No") << endl;
    }
  }
  return 0;
}